641
FZUS51 KBOX 092303
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 PM EDT SUN AUG 9 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-101200-
703 PM EDT SUN AUG 9 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A WEAK COLD FRONT CROSSES THE WATERS TONIGHT AND THEN LIFTS N
ACROSS THE REGION AS A WARM FRONT ON MON. THIS WILL BE FOLLOWED BY A
STRONGER COLD FRONT MON NIGHT INTO EARLY TUE FOLLOWED BY HIGH PRES
FOR THE MIDDLE OF THE WEEK. THIS HIGH MOVES EAST OF THE REGION WED
NIGHT WITH THE NEXT COLD FRONTAL PASSAGE SOMETIME THU INTO THU
EVENING. A RIDGE OF HIGH PRES THEN BUILDS IN FROM THE WEST FRI INTO
SAT.
ANZ250-101200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS, BECOMING S
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT, BECOMING SW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT
3 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING. SEAS
AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 9 SECONDS AND NW 1 FOOT AT 4 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-101200-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS, BECOMING SE 1 FOOT
AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
SEAS AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE
DETAIL: S 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS, BECOMING
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: W
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL:
NW 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS, BECOMING SW
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-101200-
CAPE COD BAY-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 8 SECONDS, BECOMING W 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING S WITH GUSTS UP TO 20 KT IN
THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT IN THE
AFTERNOON. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
8 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND E 1 FOOT AT 9 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE MORNING, THEN
1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 10 SECONDS, BECOMING W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 8 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. GUSTS UP TO
20 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-101200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 6 SECONDS AND E
1 FOOT AT 9 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED AND WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 2 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-101200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY
FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND
E 1 FOOT AT 9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E
1 FOOT AT 8 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-101200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
THU NIGHT THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-101200-
NANTUCKET SOUND-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE
DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 1 FOOT
AT 8 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: W
2 FT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 1 FOOT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-101200-
VINEYARD SOUND-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT AT 7 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS
AND E 1 FOOT AT 10 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT
13 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-101200-
BUZZARDS BAY-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AROUND 5 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND
SE 2 FT AT 9 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND
SE 1 FOOT AT 11 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 13 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT
AFTER MIDNIGHT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-101200-
RHODE ISLAND SOUND-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND SE 3 FT AT 10 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT AT
14 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-101200-
BLOCK ISLAND SOUND-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 10 TO 15 KT, BECOMING NW AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND
SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT AT
10 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-101200-
BOSTON HARBOR-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS.
MON
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
MON NIGHT
SW WINDS AROUND 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
TUE
W WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT. GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-101200-
NARRAGANSETT BAY-
703 PM EDT SUN AUG 9 2026
TONIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON
W WINDS AROUND 5 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. WAVES AROUND 2 FT.
MON NIGHT
SW WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
WAVES AROUND 2 FT.
TUE
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W. WAVES AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-101200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 6 SECONDS AND E 1 FOOT
AT 9 SECONDS.
MON
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT, BECOMING SW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
5 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED AND WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 2 FT AT 5 SECONDS AND E 2 FT AT 10 SECONDS.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W. GUSTS UP
TO 25 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-101200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 NM OR LESS.
MON
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED AND WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 3 FT AT 6 SECONDS AND E 2 FT AT 10 SECONDS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-101200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS
AND E 1 FOOT AT 9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-101200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 PM EDT SUN AUG 9 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND
E 1 FOOT AT 9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
THU NIGHT THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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